James T. Roark
Engineering in Dallas, TX
License number
Louisiana PE.0015157
Issued Date
Jul 8, 1975
Category
Civil Engineer
Type
Mechanical Engineer
Address
Address
PO Box 819052, Dallas, TX 75381
Professional information
James Roark
Location:
Dallas/Fort Worth Area
Industry:
Information Technology and Services
Manually Operated Blowout Preventer And Hydraulic Operator Therefor
US Patent:
4325534, Apr 20, 1982
Filed:
Oct 10, 1980
Appl. No.:
6/195995
Inventors:
James T. Roark - Dallas TX
Steven R. Hayter - Dallas TX
Steven R. Hayter - Dallas TX
Assignee:
Otis Engineering Corporation - Dallas TX
International Classification:
E21B 3306
US Classification:
251 1A
Abstract:
A blowout preventer having a body with a bore and opposing guideways intersecting the bore, a ram in each of the guideways, a cap closing the outer end of each of the guideways, an operating stem connecting to each of said rams, extending through its cap in threaded engagement and having means for engagement by a handle, such as flats on its outer end, a pair of hydraulic motors each having a housing and a rotating shaft, means for securing said motor housings to the body surrounding said guideways, means for connecting said drive shafts with the operating stems to rotate said stems, and means supplying hydraulic fluid to said motors for selective rotation of said shafts and said stems in preselected directions.